This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
n | a(n) |
---|---|
0 | 1 |
1 | 72 |
2 | 22920 |
3 | 9314448 |
4 | 4211047080 |
5 | 2021601931776 |
6 | 1008673456254640 |
7 | 516987835463640000 |
8 | 270280816277448460968 |
9 | 143468491665604992744000 |
10 | 77077894838606703430234560 |
11 | 41816670323883372478262418912 |
12 | 22870956616373890690700028823920 |